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Matlab Tutorial
Kai Goebel, Bill Cheetham RPI/GE
CRD goebel_at_cs.rpi.edu cheetham_at_cs.rpi.edu
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matlab

• Start up type matlab
• Features
• - matrix manipulation is made easy
• (data will be represented in matrices)
• - plotting is made very easy
• - suitable for quick prototyping

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Matlab is installed on the RCS machines

• 1 log into an RCS account
• or 2 "attach" to the RCS AFS directory structure
• /usr/afsws/bin/klog ltuser-id-on-RCSgt
• provide the appropriate RCS password.
• From that point, all software available on the
  RCS system should be available on the local
  machine.
• Note this attachment needs only be performed
  once per login session (not for every command
  shell opened)

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matlab tutorial

• - calculations
• - assignment of variables
• - manipulations of variables

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matlab tutorial (2)

• - vectors
• - manipulation of vectors
• (addition)
• - column vector
• - transpose of vectors

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matlab (3)

• - vector multiplication
• - dot product
• - caveat
• check inner dimensions
• before operation

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matlab (4)

• - creating matrices
• from existing ones
• - subtracting a constant value
• from vectors
• - accessing particular
• matrix elements

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matlab (5)

• - inverting matrices
• - matrix power of 2
• - square root
• of a matrix

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Matlab (6)

• Initializing vectors
• and matrices
• - known length
• - unknown length

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matlab (7)

• - checking your variables
• - variables are stored
• until reassigned or
• when program is
• terminated
• - IF THEN ELSE
• statements

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matlab (8)

• - FOR loops
• - WHILE loops
• (also note use of lt)
• - negation, OR, AND
• operators
• (also note prompt)

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matlab (9)

• - plotting data
• - labeling axis
• - adding title
• - resizing data range

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Matlab (10)

• Plotting one vector vs. the other
• using different markers
• and adding a legend

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matlab (11)

• - 3-D plots
• - arrange viewing direction

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matlab (12)

• - save larger operations in
• text file
• - invoke by typing filename
• without extension

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Matlab (13)

• - using functions in different files
• for example
• main function in
• create_vector.m
• subroutine in
• manipulate.m

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matlab (14)

• - load and save data files
• - use of system commands
• from within matlab
• - print plots to file
• (or to printer)

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matlab (15)

• - HELP!

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matlab (16)

• Look for commands relating to a keyword